1 citations · 1 across the 2 of their papers we have counts for
8 papers
AGN Physics from QSO Clustering
Scott Croom, Brian Boyle, Tom Shanks +6
We review the current status of QSO clustering measurements, particular with respect to their relevance in understanding AGN physics. Measurements based on the 2dF QSO Redshift Sur…
Clustering in the 2dF QSO Redshift Survey
S. M. Croom, B. J. Boyle, N. S. Loaring +5
We present clustering results from the 2dF QSO Redshift Survey (2QZ) which currently contains over 20,000 QSOs at z<3. The two-point correlation function of QSOs averaged over the…
Cepheid and SNIa Distance Scales
T. Shanks, P. D. Allen, F. Hoyle +1
We first discuss why there remains continuing, strong motivation to investigate Hubble's Constant. Then we review new evidence from an investigation of the Galactic Open Clusters c…
The Effects of Metallicity on the Cepheid P-L Relation and the Consequences for the Extragalactic Distance Scale
Paul D. Allen, Tom Shanks
Using published HST Cepheid data from 25 galaxies, we have found a correlation between the P-L dispersion and host galaxy metallicity which is significant at the ~3sigma level in t…
Evidence for Galaxy Formation at High Redshift
T. Shanks, N. Metcalfe, R. Fong +3
We have shown previously that galaxy counts from the UV to the near-IR are well-fitted by simple evolutionary models where the space density of galaxies remains constant with look-…
Implications of an Obscured AGN Model for the X-ray Background at Sub-mm and Far Infra-Red Wavelengths
K. F. Gunn, T. Shanks
Models invoking large populations of obscured AGN are known to provide good fits to the spectrum of the X-ray background and the observed soft and hard X-ray number counts. An impo…